Power cube



FIG. 1 is a front, left side and top perspective view of a power cubeshowing our new design in a closed position;

FIG. 2 is a front, left side and bottom perspective view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a front, left side and top perspective view of a power cubeshowing our new design in a partially open position;

FIG. 8 is a right side and bottom perspective view thereof;

FIG. 9 is a right side elevation view thereof;

FIG. 10 is a bottom plan view thereof;

FIG. 11 is a left side elevation view thereof; and,

FIG. 12 is a front elevation view thereof.

CLAIM The ornamental design for a power cube, as shown and described.